![Sony battery case EBP-MZR55 for Sony 'MD Walkman' portable minidisc recorder MZ-R55, c.1998 | Science Museum Group Collection Sony battery case EBP-MZR55 for Sony 'MD Walkman' portable minidisc recorder MZ-R55, c.1998 | Science Museum Group Collection](https://coimages.sciencemuseumgroup.org.uk/images/490/429/medium_SMG00168803.jpg)
Sony battery case EBP-MZR55 for Sony 'MD Walkman' portable minidisc recorder MZ-R55, c.1998 | Science Museum Group Collection
![Amazon.com: Kastar 1-Pack 7/5F6 Battery Replacement for Sony NW-MS9 NW-MS11 TCM-80V WM-EX190 WM-EX615 WM-EX670 WM-EX672 MZ-R55 MZ-R90 MZ-R91 MZ-R900 MZ-R900PC MZ-R900DPC MZ-RH10 MZ-RH910 Portable CD/MD/MP3 Player : Electronics Amazon.com: Kastar 1-Pack 7/5F6 Battery Replacement for Sony NW-MS9 NW-MS11 TCM-80V WM-EX190 WM-EX615 WM-EX670 WM-EX672 MZ-R55 MZ-R90 MZ-R91 MZ-R900 MZ-R900PC MZ-R900DPC MZ-RH10 MZ-RH910 Portable CD/MD/MP3 Player : Electronics](https://m.media-amazon.com/images/I/61McLFp-liL.jpg)
Amazon.com: Kastar 1-Pack 7/5F6 Battery Replacement for Sony NW-MS9 NW-MS11 TCM-80V WM-EX190 WM-EX615 WM-EX670 WM-EX672 MZ-R55 MZ-R90 MZ-R91 MZ-R900 MZ-R900PC MZ-R900DPC MZ-RH10 MZ-RH910 Portable CD/MD/MP3 Player : Electronics
![Owned this MZ-R55 for 20+ years and only noticed today that you only need one AA battery (not two) in the sidecar. Makes sense now I think about it as the gum-stick Owned this MZ-R55 for 20+ years and only noticed today that you only need one AA battery (not two) in the sidecar. Makes sense now I think about it as the gum-stick](https://i.redd.it/owned-this-mz-r55-for-20-years-and-only-noticed-today-that-v0-pduqqa8hgm8a1.jpg?width=2738&format=pjpg&auto=webp&s=f78c425701334f4129bc62a854377d44f6745bd1)
Owned this MZ-R55 for 20+ years and only noticed today that you only need one AA battery (not two) in the sidecar. Makes sense now I think about it as the gum-stick
![SOLD - Sony MD Walkman MiniDisc Player/Recorder MZ-R55 with Battery Pack & Bag - Gold | ARHC eBay Store SOLD - Sony MD Walkman MiniDisc Player/Recorder MZ-R55 with Battery Pack & Bag - Gold | ARHC eBay Store](https://arhc.callcut.net/ebay-image/59d3b56385cad/medium/sony-md-walkman-minidisc-player-recorder-mz-r55-with-battery-pack-bag-gold-1.jpg)